a shit-stain/streak left on the bottom of the toilet after dropping a dook and flushing. doodoo browns is capable of lasting though several flushes, as it is the essence of a greasy, thus water resistant doodoo ball.

After a late night of tacos and beers, Quinten nearly unleashed a mighty assbomb on the bus ride home. upon making it home he exploded shit into the toilet, leaving a doodoo bowns in Sarahs toilet.
Sarah: you left a massive doodoo fucking browns on my shit!!
Quinten: FUCK!!!! WHYYY!!!!